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HFI1: shorten lock held spin for SDMA status changes

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Balazs Gerofi
2018-04-18 18:15:59 +09:00
parent 166c6105ef
commit 91d732308d
1 changed files with 1 additions and 1 deletions
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2
kernel/sdma.c
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@ -393,7 +393,7 @@ nodesc:
unsigned long ts = rdtsc(); unsigned long ts = rdtsc();
while ((tx->num_desc > sde->desc_avail) && while ((tx->num_desc > sde->desc_avail) &&
(rdtsc() - ts) < 50000000) { (rdtsc() - ts) < 5000000) {
sde->desc_avail = sdma_descq_freecnt(sde); sde->desc_avail = sdma_descq_freecnt(sde);
cpu_pause(); cpu_pause();
} }